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双机制 : 41 phrases in 11 subjects |
| Architecture | 1 |
| Automobiles | 4 |
| Chemistry | 1 |
| Compressors | 1 |
| Football | 1 |
| Information technology | 1 |
| Metallurgy | 1 |
| Rail transport | 5 |
| Refrigeration | 14 |
| Shipbuilding | 1 |
| Technology | 11 |
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